PH

(redirected from Negative pH)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.
Related to Negative pH: pH scale

PH

The two-character ISO 3166 country code for PHILIPPINES.
References in periodicals archive ?
Major Finding: A total of 56% of patients who continued to take Ms after negative pH testing had positive scores on the GerdQ, suggesting that they did have GERD despite the pH results.
9 in the Niger Delta, whereas more dramatic pH depressions were recorded in Iron Mountain mining site, California, where pH less than zero and negative pH were recorded [26].
The typical pattern of LPR is chronic-intermittent, and therefore the diagnosis might not be straightforward because a negative pH study does not necessarily rule out LPR.